JP5650556B2 - Package filling method and apparatus in intermittent rotary type bag filling and packaging machine - Google Patents

Description

  The present invention relates to a method and an apparatus for filling an article to be packaged in an automatic bagging and packaging machine for food and the like, and more specifically, can intermittently move on a predetermined circular orbit in a horizontal plane and sandwich both side edges of the bag. Intermittent rotary rotary type bagging and packaging machine that sequentially includes a plurality of pairs of left and right grippers, which hold the bag in a suspended state with these grippers and transfer the bag within a predetermined range, and sequentially perform a predetermined packaging process on the bag. In particular, a plurality of elevating hoppers for filling an object to be packaged are installed corresponding to each gripper, and the hopper is moved in synchronization with the corresponding gripper. The present invention relates to a filling method and an apparatus for filling an object to be packaged using a so-called synchronized hopper.

  An intermittent rotary rotary bagging and packaging machine equipped with a synchronous hopper is known as disclosed in, for example, Japanese Patent No. 3742402. In this patent, when the bag is stopped in the step (e) shown in FIG. 4, the wrapping material is supplied to the hopper, and the filling of the wrapping material from the hopper to the bag starts in the step (e). It can be performed while moving to the process (f) and while the process (f) is stopped. In other words, compared to a general filling method in which a package is filled only when it is stopped at a specific intermittent stop position (packaging filling process), the package is also transferred during the bag transfer by using a synchronous hopper. There is an advantage that productivity can be improved because sufficient filling time can be secured.

However, the intermittent rotary type bag filling and packaging machine provided with the conventional synchronous hopper has the following problems.
(1) First, since the hopper is a cylindrical body that is open on both the upper and lower sides, the article to be packaged supplied into the hopper is guided to the inner surface of the hopper and immediately begins to be filled into the bag. Therefore, since the filling start position of the packaged article into the bag must be the supply position of the packaged article to the hopper, the packaged article supply apparatus (packaged article) that inevitably supplies the packaged article to the hopper. In other words, the setting position is limited, and the flexibility of the layout of the entire packaging machine is extremely limited.
(2) Next, when a measuring instrument or the like is attached, there may be a delay in measuring with the measuring machine. In such a case, there is a situation where the supply of the packaged product to the hopper by the packaged product supply device is not in time, the packaged product is not filled into the bag, and the bag is transferred to a downstream process while it is empty. As a result, the production is lost.

  By the way, in Japanese Patent Laid-Open No. 8-268401, a bag supply is controlled based on a detection signal of presence / absence of an object to be filled in a container of an automatic reversal discharging device (packaged object supply apparatus) In the case where there is not, the configuration in which the bag supply to the corresponding gripper is stopped) is disclosed (claim 7, paragraph 0031, FIG. 7). If this configuration is adopted, the problem (2) can be solved to some extent, but the filling material is not supplied into the charging hopper 64, such as when the container is not reversed or clogged in the reversing guide cylinder 61. Therefore, it is difficult to say that the problem (2) can be solved reliably. Further, since the charging hopper 64 is also open on the lower side, it is necessary to install the lift device 31, the reversing device 32, the discharge device 33, etc. at positions corresponding to the charging hopper. Cannot be resolved.

Japanese Patent No. 3742042 JP-A-8-268401

  The present application has been made in view of the above-described conventional problems, and greatly expands the degree of freedom of layout in the case of interlocking the intermittent rotary rotary bag filling and packaging machine and the packaged article supply apparatus as compared with the conventional one. It is an object of the present invention to provide a method and an apparatus for filling a package that can prevent a loss in production due to the generation of an empty bag even when the supply of the package by the package supply device is not in time. And

In order to solve the above-mentioned problems, the present invention provides the following packaged filling method. That is, the method includes a plurality of sets of grippers that intermittently move on a predetermined circular orbit, and a lower portion that is configured to be openable / closable, and a plurality of grippers that correspond to the plurality of sets of grippers, and are disposed above each gripper. An intermittently rotating rotary type bag that includes a hopper that is configured to hold both sides of the bag with the gripper, hold the bag in a suspended state, move the hopper in a predetermined range, and move the hopper in synchronization with the gripper. The present invention relates to a packing material filling method in a filling and packaging machine. In that method, the article to be packaged is stopped at a predetermined stop position, the article to be packaged is supplied to the hopper whose lower part is closed, the presence or absence of the article to be packaged in the hopper to which the article to be packaged is supplied is detected, When the presence of a package is detected, a bag is supplied to a gripper corresponding to the hopper in which the package is detected, and after the bag is supplied to the gripper, the bag mouth of the bag is opened, and then the bag is opened. Detecting whether the bag mouth of the bag is open, and if it is detected that the bag mouth is open, the hopper of the hopper in which the presence of the article to be packaged is detected in the supplied bag. Open the bottom to fill the package,
If it is not detected that the bag mouth is open, the lower part of the hopper in which the presence of the package object is detected is kept closed, and the package object is left in the hopper. Carry around the hopper and cancel the next supply of the packaged goods to the hopper,
It is characterized by that.
In the above, the hopper can be configured to be raised and lowered , and can be positioned at the raised end position when receiving the supply of the packaged item, and positioned at the lowered end position when the bag is filled with the packaged item .
Further, the hopper is configured to be liftable so that it is positioned at the rising end position when receiving the supply of the packaged item, and positioned at the descending end position when filling the packaged item with the package, and the opening of the bag mouth of the bag is When not detected, it can be set as the structure which does not move a corresponding hopper to a descent | fall position .
Further, the present invention provides an article filling apparatus in an intermittent rotary type bag filling and packaging machine having the following configuration. That is, the apparatus is configured such that a plurality of sets of grippers that intermittently move on a predetermined circular orbit, and a lower part are configured to be openable, provided to correspond to the plurality of sets of grippers, and disposed above each gripper. Intermittent rotary rotary bag-filling packaging comprising a hopper, holding both side edges of the bag by the gripper, holding the bag in a suspended state, transferring it within a predetermined range, and moving the hopper in synchronization with the gripper The present invention relates to a packing material filling apparatus in a machine. And that the packed material filling apparatus, as the said hopper is tuned moved to the gripper, is moved up and down between a lowered end position and raised end position the hopper, and supply the objects to be packaged into the hopper while in certain packaged articles supply station to be located at the upper end position, the elevating means is positioned in said lowered end position in a predetermined object to be packaged filling station to be packaged is filled into a bag in the hopper, disposed in the predetermined material to be packaged supply station, and the package item supply unit for supplying articles to be packaged into the hopper stopping to said package supply station, a first for detecting the presence or absence of articles to be packaged in the hopper a sensor, a second sensor and bag supply apparatus for sequentially supplying bags against the gripper, the supplied bag mouth of the bag is detected whether or not opened by the opening device, the control device Equipped with a. And the said package supply apparatus, a 1st sensor, and a bag supply apparatus supply the package from the said package supply apparatus when the said hopper intermittently moves along the said circular track | orbit. , the detection of the articles to be packaged by the first sensor is arranged to be performed in the order of supply of bags to the gripper. And said control device, by controlling the bag supply device based on a signal from the first sensor, when it detects the presence of the articles to be packaged in the hopper, the bag to the gripper corresponding to the hopper On the other hand, if the presence of an object to be packaged is not detected, the supply of the bag to the gripper corresponding to the hopper is not performed, and the opening and closing of the lower part of the hopper is controlled. The lower part of the hopper is kept closed from the article supply station to the package filling station, and further, the hopper and the package supply apparatus are controlled based on a signal from the second sensor, When it is detected that the bag mouth is open, the lower portion of the hopper to which the packaged object is supplied is opened in the packaged filling station, and the package is filled with the packaged object. If it is not detected that the bag opening is open, the lower portion of the hopper to which the package is supplied is closed in the package filling station, and the hopper is closed in the hopper. The hopper is carried around with the filling material left, and the next supply of the packaging material to the hopper with the filling material left is canceled .
In the packaged filling apparatus, when the second sensor detects that the bag mouth of the bag supplied from the gripper has not been opened, means for positioning the corresponding hopper above the lower end position. It may be provided.

As described above, in the present invention, the lower part of the hopper is configured to be openable and closed, and the article to be packaged supplied from the article supply device is received in the hopper with the lower part closed. Can be stored. Therefore, since the position of the package supply process, i.e., the package supply apparatus, can be set regardless of the position of the package filling start process, the intermittent rotary rotary bagging and packaging machine and the package supply apparatus are provided. The degree of freedom of layout when interlocking is greatly expanded compared to the conventional case.
Further, since the first sensor detects that the article to be packaged is surely supplied into the hopper, and the bag is supplied to the gripper corresponding to the hopper based on the detection signal, Even when the supply of the article to be packaged by the supply device to the hopper is not in time, an empty bag is not generated, and production loss can be prevented.
Further, it is possible to prevent defective packaging by detecting whether or not the bag mouth is opened by the second sensor and opening the lower portion of the hopper and filling the bag with the packaged item only when the bag mouth is opened.
Moreover, when it is detected by the second sensor that the bag mouth is not properly opened, damage to the bag can be prevented by holding the hopper at a position above the lower end position that is the filling position.

It is a typical perspective view of the intermittent rotation type rotor type bagging and packaging machine using the to-be-packaged object filling apparatus of this invention. It is a typical side sectional view of a bag packing machine. It is an expanded view which shows a part of cylindrical cam and an auxiliary cam. It is explanatory drawing which shows a part of filling process of a to-be-packaged object. It is explanatory drawing which shows the remainder of the filling process of a to-be-packaged object. It is a flowchart of control by a control apparatus.

  Hereinafter, a packing material filling method and apparatus according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic overall perspective view of a bag filling and packaging machine 1 using an apparatus for filling an article according to an embodiment of the present invention. Referring to FIG. 1, a bag filling and packaging machine 1 (hereinafter simply referred to as “packaging machine”). The detailed configuration of the known configuration will be omitted.

This packaging machine 1 is an intermittent rotation type rotary bag filling and packaging machine, and includes a rotary table 2 (hereinafter simply referred to as “table”) that rotates intermittently in the direction of the arrow in the figure. A plurality of sets of left and right grippers 3, 3 are provided at predetermined intervals. Reference numeral 4 denotes a hopper which is supplied with a package from a package supply device which will be described later and fills the bag B with the package as described later. A plurality of hoppers 4, that is, one each corresponding to the respective grippers 3, 3 are provided, and are positioned above the grippers 3, 3, respectively. Each hopper 4 is movable up and down as will be described later, and as the table 2 rotates, this also moves up and down between a rising end and a lowering end by a cylindrical cam described later. Yes. The hopper 4 includes a hopper body 5 that is open at the top and bottom, and a so-called shed 6 that can be opened and closed located below the hopper body 5 (see FIGS. 2 and 4). The shed 6 is composed of two shed pieces 7, 7 that can rotate around the support shafts 8, 8, respectively, and the tip can be opened and closed (see FIG. 4). The opening and closing of the shed 6 is controlled by the control device 32 as will be described later.

As is known, in the packaging machine 1, various packaging processes are performed at each station where the table 2 stops or while moving between stations. In station I, a known conveyor magazine 11 is arranged, and a pair of suction cups 12 and 12 are used to sequentially deliver bags B one by one to grippers 3 and 3 stopped at this station. The supply of the bag B to the grippers 3 and 3 is controlled by the control device 32 as will be described later, and the bag supply may be stopped.

In the station II, the date of manufacture is printed on the bag B using the printer 13, and the printing is inspected by the inspector 14 in the station III. In the station IV, the bag mouth of the bag B is opened using a pair of suction cups 15 and 15 connected to a vacuum source (not shown). With the opening, the left and right grippers 3, 3 approach each other by a predetermined distance, and maintain the opened bag mouth in that state. In this embodiment, a so-called self-supporting bag is used as the bag B and is not shown in FIG. 1, but the lower part of the bag B can be expanded using another pair of suction cups 16 and 16. (See FIG. 4A (d)). Vacuum sensors 18 and 18 (second sensors) for detecting whether or not the suction is properly performed on the pipes 17 and 17 connecting the suction cups 15, 15, 16 and 16 to the vacuum source and the bag mouth is opened as desired. (See FIG. 4A (d)).

At the station V, the front end side of the jar 6 of the hopper 4 is inserted into the bag B, the jar 6 is opened, and the bag B is filled with the article to be packaged supplied to the hopper 4 at the station VIII described later. Further, a tapping member 19 of a known tapping device is provided below the bag B so as to be movable up and down, and the bottom of the bag B is lightly tapped to help the packed object to be moved toward the bag bottom. (See FIG. 4A (e)). Station VI is also a filling process. That is, in this embodiment, the filling of the article to be packaged in the hopper 4 is performed not only while the bag B is stopped at the station V, but also during the movement from the station V to the station VI, and also during the stop at the station VI. Also done. The station VI is also provided with a tapping member 19 to perform tapping on the bag bottom (see FIG. 4B (f)).

At station VII, the throat 6 of the hopper 4 is pulled out from the bag B and closed, and the left and right grippers 3 and 3 move away from each other, and the bag mouth of the bag B is tensioned. This station is also provided with a tapping member 19. In station VIII, the bag mouth of the bag B is sandwiched between a pair of inspection blocks 21 and 21, and the interval between these blocks 21 and 21 detects whether or not an object to be packaged is attached to the planned seal portion on the inner surface of the bag mouth. It is supposed to be. In addition, in this station, the package object is supplied to the hopper 4 from the package object supply device 25 indicated by a two-dot chain line.

In the station IX, the bag mouth is sealed using a pair of hot plates 27 and 27. Also, defective bags such as defective printing are discharged onto a chute (not shown). Further, the station IX is provided with a sensor 80 for detecting whether or not an object to be packaged exists in the hopper 4 (see FIG. 4B (R)). The sensor 80 includes a light emitting element 81 and a light receiving element 82. Further, the hopper 4 is provided with a notch (not shown) at a portion facing the light emitting element 81 and the light receiving element 82. Next, at the station X, the bag mouth is cooled using a pair of cooling plates 29, 29, and then the left and right grippers 3, 3 are opened to discharge the bag B onto the chute 31.

Next, the hopper 4 and the mechanism for moving the hopper 4 up and down will be described with reference to FIG. That is, in this embodiment, the hopper 4 moves up and down between the highest rising end position and the lowest lowering end position. FIG. 2 is a side sectional view schematically showing the packaging machine 1. In the figure, reference numeral 41 denotes a pedestal of the packaging machine 1. A support 42 is provided on the pedestal 41, extends vertically in the support 42, and is a rotary shaft (not shown) that is intermittently driven by a drive source (not shown). The above-described table 2 is attached to the upper end and rotates intermittently. A plurality of sets of left and right grippers 3 and 3 are attached to the table 2 as described above. In the figure, two sets of grippers 3 and 3 and a hopper 4 are shown. The left side in the figure is the grippers 3 and 3 and the hopper 4 at the station V in FIG. 1, and the hopper 4 is lowered by a cylindrical cam 63 described later. The right side shows the grippers 3 and 3 and the hopper 4 in the station I, and the hopper 4 is located at the rising end position.

  Reference numeral 43 is a support frame provided on the gantry 41, and a holding case 45 whose upper side is opened is attached to the central portion of the top plate portion 44 in a suspended state. An upper cover 46 is attached to the inner surface side of the bottom of the holding case 45, a lower cover 47 is attached to the outer surface side, and a drive motor 48 is attached to the upper cover 46. A tuning table 49 is disposed on the lower side of the lower cover 47, and its shaft extends into the upper cover 46 through the lower cover 47, and is connected to the output shaft of the drive motor 48 in the upper cover 46 by an appropriate connecting device. Has been. The drive motor 48 is adapted to intermittently rotate the tuning table 49 in the same direction in synchronization with the lower table 2.

  The hopper 4 includes a hopper body 5 that is open at the top and bottom, as described above, and a so-called throat 6 that is disposed below the hopper body 5. In the figure, the shed 6 of the hopper 4 on the right side is closed and that on the left side is open. Reference numeral 51 is a guide shaft erected on the tuning table 49 at a position corresponding to the grippers 3 and 3 in the circumferential direction, and a slider 53 is fitted on the guide shaft 51 so as to be movable up and down. The hopper body 5 is attached to the first attachment portion 56 of the attachment member 55 attached to the slider 53, and the shed 6 is attached to the second attachment portion 57 with the same axial center as shown in the figure. A cam roller 59 is attached to the slider 53 and rolls on a cylindrical cam 63 attached to the inner surface side of the top plate 44 of the support frame 43 via a cam attachment member 61 so that the hopper 4 moves up and down. It has become. That is, the cylindrical cam 63 is attached so as to surround the holding case 45, and the shape thereof is provided with upper and lower flat portions and inclined portions connecting them as shown in FIG. . When the cam roller 59 is located between the stations I to III and between the stations VIII and X to I, the hopper 4 is located at the rising end position, and when located between the stations V and VI and between them, the hopper 4 is lowered. It is located at the end position, and is located between the rising end position and the falling end position in the stations IV and VII.

Next, the auxiliary cam 71 as a restricting means for restricting the hopper 4 from being lowered to the lowered end position will be described. As described above, the opening of the bag B is performed at the station IV. However, if the suction cups 15, 15, 16, and 16 are not properly sucked, a vacuum leak occurs and the opening as desired is not performed. Even if it is moved, it is not possible to properly fill the package. In such a case, the auxiliary cam 71 in the form of a plate prevents the hopper 4 from moving to the lower end position at the station V, stops at the position between the lower end position and the upper end position, and the hopper 4 This prevents the shed 6 from contacting the bag B. In that case, the shed 6 of the hopper 4 remains closed by the control device 32. Since the station VI is also a filling station, the same auxiliary cam 71 is provided in this station.

As shown in the left part of FIG. 2, the cam mounting member 61 provided at the stations V and VI among the cam mounting members 61 to which the cylindrical cam 63 is mounted is different from the mounting members 61 of other stations and extends vertically. A shaft 62 is provided, and the auxiliary cam 71 is attached to a slider 73 fitted to the guide shaft 62 so as to be movable up and down. As shown in the drawing, the width of the cam roller 59 is larger than the width of the cylindrical cam 63, and the cam roller 59 can ride on the auxiliary cam 71 at the protruding portion. As shown in FIG. 3, the auxiliary cam 71 is hung on the other end side of two tension springs 75 having one end hung on a fixed mounting member 74. An air cylinder 76 attached to the attachment member 74 is disposed between the two springs 75, the tip of the rod 77 abuts against the auxiliary cam 71, and normally the rod 77 extends and the auxiliary cam 71 is pushed down. The cam roller 59 rolls on the cam surface of the cylindrical cam 63 (see station VI in FIG. 3). However, if the opening of the bag mouth of the bag B is not properly performed as described above, the rod 77 contracts at a predetermined timing, and the auxiliary cam 71 is moved upward from the lower end position, and the station IV The cam roller 59 moving on the descending slope of the cylindrical cam 63 is received. Thereby, as shown by a thin line in FIG. 2, the hopper 4 acts at the position between the rising end position and the falling end position at the station V. The cam roller 59 located at the station VI in FIG. 3 is the cam roller of the hopper 4 corresponding to the bag B in which the opening of the bag opening is appropriately performed, the auxiliary cam 71 remains lowered, and the cam roller 59 is the cylindrical cam 63. Riding on the cam surface. Next, when the cam roller 59 in the station V moves to the station VI, the auxiliary cam 71 of the station VI rises at a predetermined timing and receives the moving cam roller 59. On the other hand, the auxiliary cam 71 of the station V has a timing that does not hinder the movement of the cam roller 59 when the bag opening of the bag B corresponding to the hopper 4 located at the station IV is appropriately opened. The rod 77 is extended and lowered.

Next, with reference to FIGS. 4A and 4B, the operation at each station and the operation while moving between stations will be described in more detail. FIG. 4 is an explanatory diagram showing a process at each station shown in FIG. (A) to (E) in FIG. 4A correspond to the stations I to V in FIG. 1, and (F) to (N) in FIG. 4B correspond to the stations VI to X, respectively. A hopper 4 and a bag B and grippers 3 and 3 are shown on the lower side. 4A (A) and 4B (G) to (L), only the hopper 4 is shown in cross section, and in FIGS. 4A (E) and 4B (F), the hopper 4 and the bag B are shown in cross section. .

4A corresponds to the station I in FIG. 1 as described above. As shown in the figure, the bag B supplied from the conveyor magazine 11 is gripped at both side edges by the left and right grippers 3 and 3, held in a suspended state, and the bag mouth is closed. On the other hand, the wrapping material supplied from the wrapping material supply apparatus 25 in FIG. 4B (h) (station VIII) described later is stored in the hopper 4. Of course, the shed 6 is closed. If it is detected at station IX, which will be described later, that the wrapping material that should have been supplied to hopper 4 at station VIII is not present in hopper 4 at station I in FIG. Then, the supply of the bag B to the grippers 3 and 3 corresponding to the hopper 4 is not performed.

After stopping for a predetermined time, the table 2 and the tuning table 49 are rotated in synchronism with a predetermined angle and stopped at the station II (FIG. 4A (B). Here, as described above, the date of manufacture is printed on the bag B. Next, the station moves to the station III (FIG. 4A (c)), where the printing is inspected.When the movement from the station III to the station IV is started, the cam surface of the cylindrical cam 63 faces downward. 3 (see FIG. 3), the hopper 4 starts to descend, and when it stops at the station IV, the opening process of the bag B by the suction cups 15, 15, 16, 16 is performed. The pipes 17 are connected to each other by vacuum sensors 18 and 18 as second sensors provided in the middle of the pipes 17 and 17 at a predetermined timing. 17 is detected and a signal is sent to the control device 32 to determine whether the bag mouth has been opened normally or not. B has not been reached (see FIG. 4A (d)).

  Next, rotation is resumed toward the station V, but before that, the suction cups 15, 15, 16, and 16 stop adsorbing to the bag B and leave the bag B. The grippers 3 and 3 keep the bag mouth open while keeping close. When the table 2 and the tuning table 49 rotate, the hopper 4 further descends, the cam roller 59 reaches the lowest point of the cylindrical cam 63, and the hopper 4 stops at the lower end position. When the table 2 or the like stops, the tip of the shed 6 has entered the bag B. Then, the throat 6 is opened by the control device 32, and filling of the bag B with the article to be packaged is started. As described above, the tapping member 19 performs tapping on the bag bottom. Station V is thus a filling station, but in some embodiments, the shed 6 is moving at an earlier stage, that is, when moving from station IV to V (the cam roller 59 rolls in a downwardly inclined portion of the cylindrical cam 63). It is also possible to enter the bag B and open the bag B). In this case, the process part is also included in the filling station. As described above, when the opening of the bag B is not properly performed at the station IV, the auxiliary cam 71 rises at a predetermined timing, and the moving cam roller 59 moves from the middle of the cam surface of the cylindrical cam 63. Moves to the auxiliary cam 71 and stops. In this case, as described above, the control device 32 keeps the shed 6 of the hopper 4 closed.

  Next, the station VI moves to the station VI. As described above, the filling operation is continued during the movement and the stop at the station VI. Tapping by the tapping member 19 is also performed at the station VI. The filling ends while stopping at station VI. If the opening of the bag opening of the bag B is not properly performed, the auxiliary cam 71 of the station VI rises at a predetermined timing, and the cam roller 59 moving from the auxiliary cam 71 of the station V is moved. To accept. On the other hand, the auxiliary cam 71 of the station V is pushed downward at a timing that does not interfere with the cam roller 59 that rolls on the cylindrical cam 63 and then moves to the station V.

  When the movement from the station VI toward the station VII is started, the cam roller 59 moves on the slope inclined upward of the cylindrical cam 63, and the hopper 4 starts to rise. And when stopping at the station VII, the shed 6 of the hopper 4 has already come out of the bag B, and the shed 6 is closed. When the spout 6 comes out of the bag B, the left and right grippers 3 and 3 move away from each other at a predetermined timing, and the bag mouth of the bag B is tensioned. Note that tapping by the tapping member 19 is also performed in the station VII.

  Next, it moves toward the station VIII. At this time, the cam roller 59 further moves on the inclined surface inclined upward of the cylindrical cam 63 to reach the flat portion, and stops at the station VIII. The hopper 4 reaches the rising end position. During the stop, the bag mouth is sandwiched between the pair of blocks 21 and 21 described above, and it is detected whether an object to be packaged adheres (bites) to a portion to be sealed of the bag mouth. On the other hand, a predetermined amount of articles to be packaged is supplied from the article supply device 25 to the hopper 4 in which the shed 6 is closed.

Then move to station IX. Here, as described above, the bag mouth is sealed using the pair of hot plates 27. In addition, when a defect occurs in the packaging process performed up to this point (for example, defective printing, an unsealed bag due to biting of an object to be packaged, etc.), the defective bag is discharged here. Further, when the station is stopped, the presence or absence of an object to be packaged in the hopper 4 is detected by the first sensor 80 including the light emitting element 81 and the light receiving element 82 shown in FIG. That is, the package supply device 25 supplies a certain amount of package, and is equipped with a measuring instrument or the like. For this reason, the measurement takes time and the hopper 4 is stopped at the station VIII. There is a possibility that the supply is not in time, and as a result, the hopper 4 moves to the station IX without the article to be packaged being supplied to the hopper 4. Therefore, at this station, the presence / absence of an object to be packaged in the hopper 4 is detected. If the object to be packaged does not exist, when the hopper 4 moves to the station I, the corresponding grippers 3, 3 are detected. The supply of the bag B to the bag is stopped, the empty bag is moved, and the wasteful packaging process after the bag supply process is stopped, thereby preventing production loss.

Next, it moves to the last station X, a seal part is cooled with a pair of cooling plates 29 and 29, grippers 3 and 3 are opened, and bag B (product) is discharged to chute 31. Then, the grippers 3 and 3 are closed to move to the station I again.

Finally, a flowchart of control using the second sensors 18 and 18 and the first sensor 80 will be described. In step I, a package supply command is issued in step 2, and the supply of the package to the hopper 4 is performed in the station VIII. Next, in step 3, the first sensor 80 detects the article to be packaged in the hopper 4. If the package is not detected, the process returns to step 2. Since the bag supply permission command is not issued, even if the hopper 4 moves to the station I, the bag B is not supplied to the grippers 3 and 3 corresponding thereto.

When the presence of an article to be packaged is detected in step 3, a bag supply permission command is issued in step 4, and when this hopper 4 moves to station I, the bag B is supplied from the magazine 11 to the corresponding grippers 3, 3. Next, in step 5, the opening inspection of the bag B by the second sensors 18, 18 is performed. When the bag mouth is properly opened, a spout opening command is issued at step 6, the spout 6 is opened at station V, and the bags to be packaged are filled. Next, a closing instruction is issued at step 7, and the closing opening 6 is closed at station VII. Then, the process returns to step 4. On the other hand, if the opening failure of the bag mouth is detected, the process proceeds to step 8 where a hopper non-insertion command, a bag mouth seal stop command, and a defective bag discharge command are issued, and the bag B is discharged at the station IX and returns to step 2. . Since the hopper non-insertion command is issued in step 8, the above-mentioned auxiliary cam 71 operates, and the hopper 4 is stopped at a position between the rising end position and the falling end position at the stations V and VI, and the shed 6 is closed. Will remain.

If a defective opening of the bag B is detected, in the above-described embodiment, the object to be packaged in the hopper 4 is carried around as it is by the hopper 4, and the next supply of the object to be packaged from the packaged object supply device 25 is performed at the station VIII. Is canceled and the defective opening bag is discharged at the station IX. However, it is also possible to open the shed 6 at the station V and discharge the package in the hopper 4 to the outside through the chute, for example, and then discharge the bag with the defective opening to the outside at the station IX. Alternatively, the jar 6 is opened at the station V and the packaged item in the hopper 4 is discharged out of the machine through, for example, a chute, while the bag B that has been poorly opened is held and carried around, and the corresponding grippers 3, 3 The next supply of the bag B may be canceled, and the opening of the bag mouth may be attempted again for the bag B that has previously failed to open. Furthermore, the article to be packaged in the hopper 4 and the bag B with poor opening are carried around as they are, and the supply of the article to be packaged from the article supply device 25 and the next supply of the bag B to the corresponding grippers 3 and 3 are cancelled. Then, the opening of the bag mouth may be attempted again for the bag B that has been defective in opening the previous time, and the packaged items carried around in the opened bag B may be filled.

In the above embodiment, when the second sensors 18 and 18 detect the opening failure of the bag B, the hopper 4 is not lowered to the lower end position, and the tip of the hopper 4, that is, the shed 6 is the upper edge of the bag mouth. It is held at a higher position, that is, a position not inserted into the bag mouth. Thereby, it is possible to prevent the spout 6 from being caught in the bag mouth that is opened halfway and damaging the bag mouth.

Claims (5)

A plurality of sets of grippers that intermittently move on a predetermined circular orbit, a lower portion is configured to be openable and a plurality of grippers are provided so as to correspond to the plurality of sets of grippers, and a hopper is provided above each gripper. The gripper sandwiches both side edges of the bag, holds the bag in a suspended state, transfers it within a predetermined range, and moves the hopper in synchronization with the gripper. In the packaging filling method,
Stops at a predetermined stop position, supplies the package to the hopper whose bottom is closed,
Detect the presence or absence of the package in the hopper supplied with the package,
When the presence of a packaged item is detected, a bag is supplied to a gripper corresponding to the hopper in which the packaged item is detected;
After supplying the bag to the gripper, opening the bag mouth of the bag, then detecting whether the bag mouth of the bag is open,
When it is detected that the bag mouth is open, the lower portion of the hopper in which the presence of the package object is detected is opened in the supplied bag, and the package object is filled.
If it is not detected that the bag mouth is open, the lower part of the hopper in which the presence of the package object is detected is kept closed, and the package object is left in the hopper. Carry around the hopper and cancel the next supply of the packaged goods to the hopper,
A packaged filling method characterized by the above. 2. The package filling method according to claim 1 , wherein the hopper is configured to be raised and lowered, and is located at a rising end position when receiving the supply of the package, and at a lowered end position when filling the bag with the packaged object. A packaged filling method, characterized in that it is positioned.   2. The package filling method according to claim 1, wherein the hopper is configured to be raised and lowered, and is located at a rising end position when receiving the supply of the package, and at a lowered end position when filling the bag with the packaged object. A method for filling an article to be packed, wherein the hopper is not moved to the lower end position when an opening of the bag mouth of the bag is not detected. A plurality of sets of grippers that intermittently move on a predetermined circular orbit, and a lower portion that is configured to be openable / closable, provided to correspond to each of the plurality of sets of grippers, and provided with a hopper disposed above each gripper, An article to be packaged in an intermittent rotary rotary bagging and packaging machine that grips both side edges of a bag with a gripper, holds the bag in a suspended state, moves it within a predetermined range, and moves the hopper in synchronization with the gripper. In the filling device,
The packaged article filling device comprises:
As the hopper moves in synchronization with the gripper, the hopper is moved up and down between the rising end position and the falling end position, and the packaged object is supplied into the hopper at a predetermined packaging object supply station. Elevating means positioned at the lowered end position in a predetermined package filling station that fills a bag with an article to be packaged in a hopper,
A package supply device for supplying a package to a hopper disposed at the predetermined package supply station and stopped at the package supply station;
A first sensor for detecting the presence or absence of an object to be packaged in the hopper;
A bag supply device for sequentially supplying bags to the gripper;
A second sensor for detecting whether a bag mouth of the supplied bag is opened by an opening device;
A control device,
Wherein the articles to be packaged supplying device, the first sensor, the bag supply apparatus, when the hopper is intermittently moved along the circular path, the supply of material to be packaged from the package item supply unit, wherein It is arranged to be performed in the order of detection of an object to be packaged by the first sensor and supply of the bag to the gripper,
Wherein the control device, by controlling the bag supply device based on a signal from the first sensor, when it detects the presence of the articles to be packaged in the hopper, the supply of bags to the gripper corresponding to the hopper On the other hand, if the presence of an object to be packaged is not detected, the bag is not supplied to the gripper corresponding to the hopper, and the opening and closing of the lower part of the hopper is controlled to control the object to be packaged. The lower part of the hopper is kept closed from the supply station to the package filling station, and the hopper and the package supply device are controlled based on a signal from the second sensor, and the bag When it is detected that the mouth is open, the lower portion of the hopper to which the article to be packaged is supplied is opened at the article filling station to fill the bag with the article to be packaged. If no opening is detected, the lower part of the hopper to which the article is supplied is kept closed at the article filling station, and the object is left in the hopper. Carrying around the hopper as it is and canceling the supply of the next packaged item to the hopper where the filled item remains,
A filling device. 5. The packaged article filling apparatus according to claim 4, further comprising a regulating means for regulating the hopper from descending to the lowered end position, wherein the control apparatus includes a second sensor. By controlling the restricting means based on the signal, if the opening of the bag mouth is not detected, the hopper is not moved to the lowered end position.

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